This single Feverfew plant has produced hundreds of blooms this week and is brightening up a dull garden!
Feverfew (Tanacetum parthenium; syn. Chrysanthemum parthenium (L.) Pers., Pyrethrum parthenium Sm.) is a traditional medicinal herb which is found in many old gardens, and is also occasionally grown for ornament. The plant grows into a small bush up to around 46 cm (18 in) high, with citrus-scented leaves and is covered by flowers reminiscent of daisies. It spreads rapidly, and they will cover a wide area after a few years. It is also commonly seen in the literature by its synonyms, Chrysanthemum parthenium (L.) Bernh. and Pyrethrum parthenium (L.) Sm.
(Info from Wikipedia)